創建mysql的yum源檔案,其他默認的yum源的組態檔不用動
vi mysql.repo
[mysql]
name=mysql
baseurl=https://mirrors.cloud.tencent.com/mysql/yum/mysql-5.6-community-el7-x86_64/
enabled=1
gpgcheck=0
yum clean all
yum makecache fast
yum install -y mysql-community-server
yum -y install mysql-community-server ansible
systemctl start mysqld
默認沒有密碼
mysql -u root -p
添加密碼
grant all on *.* to root@'%' identified by 'Tredis';
grant all on *.* to root@'localhost' identified by 'Tredis';
grant all on *.* to root@'test' identified by 'myPassword';
flush privileges;
卸載MySQL的步驟：
1.查看是否安裝Mysql
[atguigu@hadoop102 module]$ rpm -qa | grep -i mysql
MySQL-client-5.6.24-1.el6.x86_64
MySQL-server-5.6.24-1.el6.x86_64
2.查看MySQL服務是否啟動，關閉
[atguigu@hadoop102 module]$ sudo service mysql status
[sudo] password for atguigu:
MySQL running (2681) [確定]
[atguigu@hadoop102 module]$ sudo service mysql stop
Shutting down MySQL… [確定]
3.卸載MySQL安裝的組件
[atguigu@hadoop102 module]$ sudo rpm -e MySQL-server-5.6.24-1.el6.x86_64
[sudo] password for atguigu:
[atguigu@hadoop102 module]$ sudo rpm -e MySQL-client-5.6.24-1.el6.x86_64
4.查找并洗掉MySQL相關的檔案
[atguigu@hadoop102 module]$ whereis mysql
mysql: /usr/lib64/mysql
[atguigu@hadoop102 module]$ sudo find / -name mysql
/var/lib/mysql
/var/lib/mysql/mysql
/usr/lib64/mysql
[atguigu@hadoop102 module]$ sudo rm -rf /var/lib/mysql
[atguigu@hadoop102 module]$
sudo rm -rf /usr/lib64/mysql
2.4 MySql安裝
2.4.1 安裝包準備
1．查看mysql是否安裝，如果安裝了，卸載mysql
（1）查看
[root@hadoop102 桌面]# rpm -qa|grep mysql
mysql-libs-5.1.73-7.el6.x86_64
（2）卸載
[root@hadoop102 桌面]# rpm -e --nodeps mysql-libs-5.1.73-7.el6.x86_64
2．解壓mysql-libs.zip檔案到當前目錄
[root@hadoop102 software]# unzip mysql-libs.zip
[root@hadoop102 software]# ls
mysql-libs.zip
mysql-libs
3．進入到mysql-libs檔案夾下
[root@hadoop102 mysql-libs]# ll
總用量 76048
-rw-r–r--. 1 root root 18509960 3月 26 2015 MySQL-client-5.6.24-1.el6.x86_64.rpm
-rw-r–r--. 1 root root 3575135 12月 1 2013 mysql-connector-java-5.1.27.tar.gz
-rw-r–r--. 1 root root 55782196 3月 26 2015 MySQL-server-5.6.24-1.el6.x86_64.rpm
2.4.2 安裝MySql服務器
1．安裝mysql服務端
[root@hadoop102 mysql-libs]# rpm -ivh MySQL-server-5.6.24-1.el6.x86_64.rpm
2．查看產生的隨機密碼
[root@hadoop102 mysql-libs]# cat /root/.mysql_secret
OEXaQuS8IWkG19Xs
3．查看mysql狀態
[root@hadoop102 mysql-libs]# service mysql status
4．啟動mysql
[root@hadoop102 mysql-libs]# service mysql start
2.4.3 安裝MySql客戶端
1．安裝mysql客戶端
[root@hadoop102 mysql-libs]# rpm -ivh MySQL-client-5.6.24-1.el6.x86_64.rpm
2．鏈接mysql
[root@hadoop102 mysql-libs]# mysql -uroot -pOEXaQuS8IWkG19Xs
3．修改密碼
mysql>SET PASSWORD=PASSWORD('000000');
4．退出mysql
mysql>exit
2.4.4 MySql中user表中主機配置
配置只要是root用戶+密碼，在任何主機上都能登錄MySQL資料庫，
1．進入mysql
[root@hadoop102 mysql-libs]# mysql -uroot -p000000
2．顯示資料庫
mysql>show databases;
3．使用mysql資料庫
mysql>use mysql;
4．展示mysql資料庫中的所有表
mysql>show tables;
5．展示user表的結構
mysql>desc user;
6．查詢user表
mysql>select User, Host, Password from user;
7．修改user表，把Host表內容修改為%
mysql>update user set host='%' where host='localhost';
8．洗掉root用戶的其他host
mysql>delete from user where Host='hadoop102';
mysql>delete from user where Host='127.0.0.1';
mysql>delete from user where Host='::1';
9．重繪
mysql>flush privileges;
10．退出
mysql>quit;
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標籤：區塊鏈